Director of National Intelligence James R. Clapper Jr. prepares to testify before the Senate Armed Services hearing on cyberthreats on Thursday. (Tom Williams/CQ Roll Call)

Russian President Vladimir Putin ordered a campaign targeting the 2016 U.S. presidential election to undermine confidence in American democracy, smear Hillary Clinton and, eventually, to help lift Donald Trump to victory, according to a declassified report from U.S. intelligence agencies.

The document, based on information and analysis from the CIA, FBI and National Security Agency, spells out the U.S. spy agencies’ conclusions on what they say was Russia’s wide-ranging venture to interfere in the American vote.

Director of National Intelligence James Clapper told lawmakers that the intelligence community will brief its oversight committees early next week on the report before providing a similar briefing to the full House and Senate. (Al Drago/CQ Roll Call file photo)

Congress will be briefed next week on the intelligence community’s report detailing Russian cyberattacks during the 2016 election, Director of National Intelligence James R. Clapper Jr. said Thursday.

An unclassified version of the report, which President Barack Obama ordered the nation’s spy agencies to draw up last month, will be released to the public as well, Clapper told the Senate Armed Services Committee.